Folding device for the manufacture of paper tubes.



FOLDING DEVICE FOR THE MANUFACTURE OF PAPER TUBES. APPLICATION HLED IULYH, 1913.

Patented Mar. 7,1916.

3 SHEETS-SHEET I MenZoW- 1. BARDET. FOLDING DEVICE FOR THE MANUFACTURE OF PAPER TUBES. APPLICATION FILED JULYI]. 1913.

1,174,039. Patented Mar. 7, 19 16.

3 SHEETS-SHEET 2 JMW,- m WBMM. Qf Z5 2w kAZYQFGWW- THE COLUMBIA PLANOORAPH 60.. WASHINGTON, b. c.

J.BARDET. v FOLDING DEVICE FOR THE MANUFACTURE OF PAPER TUBES.

. I APPLICATION FILED .I UL Y.l7| I913. 1,174,039.

3 SHEETS-SHEET 3- I 5471/ 47 W lfywflww+ THE COLUMBIA PLANOORAPH CO, WASHINGTON, D. C-

Patented Mar. 7,1916.

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JEAN BARIDET, or PARIS, FRANCE, ASSIGNOR To nonsoiv, noLnnaco, LIMITED, or

EDINBURGH, SCOTLAND, A LIMITED COlVIPANY INCGRPORATED TUNDER' BRITISH COMPANIESACTfi 1862 T9 1898. 7

FOLDING DEVICE For. THEMANUFACTURE or PAPER *rnnns.

Application filed m 17, 1913. Serial no. $79,579.

'of which the'following is a specification.

The present invention hasfor its object to provide an improved device to be used in the manufacture of tubes and the like made from folded paper and which can particularly be employed in connection with machines for the manufacture of bags.

The improved device constructed according to the present invention consists sub stantially of two movable plates connected in such a manner that they remain always parallel in relation to one another, although they may receive in: a plane perpendicular to their direction two kinds of translational movements, which produce the difierent folds to be made the sheet ofpaper arranged around these plates. i

A form of this improved device is shown by way of example in the accompanying drawings, in which- Figures 1 to 8 show diagrams illustrating the successive stagesin the manufacture of a paper tube. Fig. 9 is a diagram of the folding device. Figs. 10. and 11 are a side elevation and a plan view respectively of 7 this folding device. Fig. 12 is an end-view and Fig. 13 a transverse section onthe line A-A of Fig. 10. Figs. 14. and 15 show diagrammatically two different positions of the plates.

As shown in Fig.1 the sheet of paper a,

which is to be transformed into a tube, is at j first placed upon the two plates 72 and 0 ar-;

-latlonal movements of the supports may be ranged in the same plane. The lateral parts of the sheet projecting beyond theseplates are folded under the latter by means of devices which do not form part of this invention, in such a manner that the edges,one of which is guinmed, are stuck together, so" that the sheet forms a flat tube as shown in the arrows in Figs. 3 and 4, is imparted to these plates, so that each of them assumes Specification of Letters Patent.

Patented Mar. '2', 1916.

the previous position of the opposite plate.

In this manner there are formed between the two first folds 1 and 2 of the flat tube two new folds 3 and-e at the opposite edges of the plates (Fig. 5). As the plates are then movedbackward tilltheyare again op posite one another, as shown in Fig. 6, the tube'takes theforin ofa square'prism. If the platesare atthis moment moved toward each other and ifatthe same time, when the movable fingers f, g, arranged laterally, push the sides of the tubes inwardly, said sides are folded and 'flattened in such a manner that they form two newfolds Sand 6 (Fig.7). 7

The transverse section of the tube folded in j this manner is shown in Fig. 8. A tube of this kind is particularly adapted for the manufacture of square bags according to a process, which does not form part of this invention. I

The present invention relates more particularly to the arrangement of the plates b 0 ,and to theirsupporting and operating if m echanism. Each plate is connected with a sup.p ort '7,' in which is arranged aslide 8 perpendlcularly to theplane of this plate and slides upon a guide 9, forming part of another support 10. The latter is supported by means of arms 11, 12 oscillating around fixed spindles, pins orthe like 13, 1 1. The arms 11, 12are parallel and are of the same length, so that they form with the support '10 a linked quadrilateral. 'VVhe'n these arms turn about theirrespective spindles, the supports 10 will therefore receive circular. translational movements. The. pivots 15, 16 of such arms are arranged in such a manner lthat they do not meetwhenthey come to be situated in the same plane passing through I the spindles=13, 14s0:that the circular trans pinions 17 gearing with toothed sectors 18, j

which are provided on an oscillating support 19, mechanically actuated for example by means of a cam (not shown) which acts .upon an arm connected with said support.

Independent from the movements of circular translation'wh'ich are imparted to the plates Z; c and their supports 10, these plates can further move relatively to said supports by meansof the slides 8 in a perpendicular direction. For thispurpose the supports 7 are provided with pins 21 upon which levers (not shown) may act so that these supports are brought together by overcoming the action of the springs 22.

i rotation is obtained by means of a toothed has "sector 25 connected to the sleeve 23 and a.

rack 26 sliding in the support 7. The mechanism operating the rack 26 is not shown; it can be of any suitable construction. On the other hand. the sliding of the sleeve .on its pin is eflected in one direction by means of a spring 27, arranged in the interior of the sleeve and in the other direction by means of beveled surfaces 28, 29 provided on this sleeve and the support 7. By means of these surfaces the presser arm is automatically raised'when it is moved laterally and it is subjected to. the action of the spring 27 as soon as it is moved parallel to the edges'of the plate.

The details of construction and arrangement of the different parts described above may of course be modified without departing from the inventionyso for example the presser arms 01 e may be arranged in such a manner upon the plates that they can oscillate about pins or the like parallel to these plates and perpendicular to the pins 13, 14:.

Claims:

1. A folding device for the manufacture of folded paper tubes comprising two parallel axes, movable arms around such axes, supports jointed to the said arms and forming with the same a jointedlozenge, such supports having guiding parts extending perpendicularly to the plane of such axes, plates slidably mounted on such guiding parts, the planes of these plates being para1- lel to the plane of the said axes, and means whereby to give to the said arms oscillatory motions of half a revolution.

2. A folding device for the manufacture of folded paper tubes comprising two parallel axes, pinions on such axes, two seg ments having inner teeth the center of which is located in the middle of the distance of the said axes, such segments having apertures for the passage of such pinions, and meshing with the latter, arms associated with the said pinions, supports jointed to such arms and forming with the latter a ,jointed lozenge and plates mounted on the said supports in such a manner as to be mov-V able perpendicularly to their planes.

parallel axes located at the middle of their length, plates mounted on the two other members of the lozenge and located parallelly to the plane of the said xes, spring pressed arms mounted on such plates, such arms being adapted to turn outwardly and inwardly as to the plates, and inclined cam surfaces on thepla-tes, adapted to support such arms in such a manner that they will receive an upward and downward movement when turning.

In testimony, that I claim the foregoing as myinvention I have signed my name in presence of two subscribing witnesses.

JEAN BARDET.

Witnesses: 1

-HANSON C. Coxn,

MAURIcn RANX.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

' Washington, D. G. c 

